<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>1.html</title>
    <style>
        div{
            width:600px;
            height:168px;
            background:url("imgs/center.jpg");
            background-size:600px 168px;
        }
    </style>
    
</head>
<body>
    <div></div>
</body>
</html>